Freezing-box for ice-machines



(No Model.) 2 Sheets-Sheet 1.

H. REA, Jr. & J. L. CLARK. FREEZING BOX FOR 103 MACHINES.

No. 439,559. Patented Oct. 28, 1890.

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(No Model.)

2 Sheets-Sheet 2. H. REA, Jr. 86 J. L. CLARK. FREEZING BOX FOR ICE MACHINES.

N0. 439,559. Patented Oct. 28, 1890.

UNITED STATES PATENT OEEIcE.

HENRY REA, JR, AND JOSHUA L. CLARK, OF PITTSBURG, PENNSYLVANIA.

FREEZING-BOX FOR ICE-MACHINES.

SPECIFICATION forming part of Letters Patent No. 439,559, dated October 28, 1890.

Application filed May 15 1890| Serial No- 351,984. 7 (No model.)

To all whom it may concern.-

Be it known that we, HENRY REA, Jr., and JOSHUA L. CLARK, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Freezing- Boxes for Ice Machines, of which the following is a specification.

Our invention is in the nature of an improved freezing-box for ice-machines; and it consists in the peculiar construction and arrangement of parts, in Whichabox or tank is subdivided with a series of parallel cells or compartments by means of hollow partitions through which a refrigerating-liquid is made to circulate, in order to freeze into slabs of ice the water or other liquid placed in the intervenin g cells.

Figure 1 is a plan View of the freezing-box. Fig. 2 isa front end view of the same with the left-handcornerbroken away, showin gthe partitions in section, and with the extreme right cell or compartment opened by the throwing back of its hinged door. Fig. 3isa side View, partly in vertical longitudinal section, of one of the partitions with the cell-door attached; and Fig. 41S a perspective view of the freezingbox, showing the manner of removing the slabs of ice.

T represents the outer case or tank, in which are arranged in parallel position the partitions A, Fig. 3, which divide up the tank into a series of parallel cells or compartments which are designed to be filled with water or other liquid to be frozen. These partitions are made hollow and are provided with a number of alternating baffle-plates d, which cause the refrigerating-liquid to have a long and tortuous or winding course through the partition, as shown by the arrows, the liquid coming in through the pipes e at the top and issuing through pipes c at the bottom.

Each one of the partitions A is provided with a door B, which is hinged about a vertical axis g 9, Fig. 2, so as to open or close the end of each cell, and each of the said doors is braced by flanges upon the outside, and has fulcrumed to its middle a double locking-bar 0, whose ends are bent over in the form of hooks b and b, which when the locking-bar is turned about its fulcrum a are adapted to look behind lugs f f on the stationary part of the box, so as to lock the doors in closed position. To make the doors fit tightly against their bearings, so as to prevent leakage, they are provided with gaskets or packing-strips of rubber, and the inner edges of the lugs f f are made inclined or wedge-shaped, as seen in Fig. 1, in order to cause the locking-barhooks b b to be drawn tightly when forced behind these lugs. When all the doors B are tightly closed, it will be seen that a series of watertight cells are formed between the partitions, and when water is placed therein and the cold refrigerating-liquid of an ice-machine is allowed to circulate through the hollow intervening partitions the water in the cells is quickly converted into slabs of ice, which will be successively removed by circulating any hot liquid, steam, or air through the refrigerating-cells for the purpose of loosening the slabs of ice, and then opening the doors B and removing the slabs of ice I one at a time.

In making use of our invention we do not confine ourselves to any particular refrigerating-liquid; but may use any liquid vehicle of cold that may be preferred or employed by the various ice-machines.

Having thus described our invention, What we claim as new is-== A freezing-box for ice-machines, consisting in the tank T, having a series of closed hollow partitions A, forming ice-chambers between them and provided with inlet and outlet pipes and baffle-plates, said chambers being open at one end, series of lugs f f along the lower and upper edges of the open side of the tank and between the several partitions, and a series of doors B, hinged at onevertical edge in line with one side of the ice-chambers to close their open ends and each having a verticallyswinging centrally-pivoted locking-bar 0, provided with inward-projecting ends, having lugs 17 Z) projecting toward each other to engage the lugs ff, substantially as described.

HENRY REA, JR. JOSHUA L. CLARK.

Witnesses:

S. S. ROBERTSON, W. J. WHITE. 

